Adjustable die-holder for thread-rollers.



A. H. GAESS.

ADJUSTABLE DIE HOLDER EoR THREAD RoLLERs.

APPLICATION FILED SEPT.22, 1914.

1,146,560. Patented July 13, 1915.

2 SHEETS-SHEET 1- coLuMmA PLANOGRAPH co., WASHINGTON, D, c.

A, H. GAESS. ADJUSTABLE DIE HOLDER FOR THREAD ROLLERS.

APPLICATION FILED SEPT. 22. 1914.

2 SHEETS-SHEET 2'.

Patented July 13, 1915.

COLUMBIA PLANQURAPH C0, 'Aslllili'i'un. u. L,

STATES rn'rnn uric.

ALBERT H. GAESS, OF WATERBURY, CONNECTICUT, AS SIGNOR TO THE E. J.MANVILLE MACHINE COMPANY, OF WATER/BURY, CONNECTICUT, A CORPORATION OFCON- NECTICUT.

Specification of Letters Patent.

Patented July 13, 1915.

Application filed September 22, 1914. Serial No. 862,926.

To all whom it may concern:

Be it known that I, ALBERT H. GAESS, a citizen of the United States,residing at lVaterbury, in the county of New Haven and State ofConnecticut, have invented a new and useful Improvement in AdjustableDie-Holders for Thread-Rollers, of which the following is aspecification.

This invention relates to the means provided for adjusting thestationary die in a machine for rolling screw threads upon blanks. It isnecessary to adjust the stationary die toward and from the movable dieto accommodateblanks of different diameters. Sometimes this adjustmentmust be made so as to carry the rolling face of the stationary dieparallel with the rolling face of the movable die, and sometimes it isnecessary to incline the face of the stationary die with relation to theface of the movable die. Often the adjustment to accomplish the desiredresult is very slight. For adjusting the die it has previously been thecustom to push the die holding block in by thrust screws, or pull it outby draw screws, the former bearing against the back of the die holdingblock, and the latter being threaded into the die holding block. Withthis arrangement when it is necessary to tilt the stationary die thethrust screws do not bear flatly against the face of the die holder andthe ends of the draw screws are more or less bent depending upon theamount of inclination given to the face of the stationary die. This, ofcourse, is unsatisfactory because it renders the backing less solid andtends to bind the parts and also break or damage the draw screws.

The object of the invention is the production of a very simple means bywhich the block that holds the stationary die will be firmly backed andcan be accurately adjusted so that the face of the stationary die willbear the necessary relation tothe face of the movable die to insuresatisfactory results when the blanks are rolled between them.

Referring to the accompanying drawings, Figure 1 shows an elevation of aportion of the front end of a thread roller with the stationary diearranged to be adjusted by means which embody this invention. Fig. 2shows a plan of the parts illustrated in Fig. 1.

The ram 1 is moved back and forth as usual 011 the frame 2 by any of thecommon mechanisms, being held in place by cap 3, which is bolted to thetop of one side of the frame. The moving die f is held to the block 5 onthe ram by the top clamp 6 and'screw 7 and by end clamp 8 and screw 9.

The stationary die 10 is secured to the die holder 11 by the top clamp12 and screw 13, and the end clamp 14 and screw 15. "The die holder isheld in place by the screws 16, which pass down through it into theframe and by the stop or thrust post 17.

The die holder is moved in and out for adjusting the rolling face of thestationary die by means of the thrust screws 18 and draw screws 19. Thethrust screws are tubular and pass through threaded openings in the sideof the frame, and their ends bear against flattened surfaces on thesides of the cylinders 20, which are loosely set in vertical sockets inthe die holder. The draw screws pass freely through the thrust screwsand have their inner ends threaded into the cylinders, which form pivotsfor the ends of the screws.

When it is desired to adjust the stationary die the die holder screwsare loosened and the holder either moved in by turning in the thrustscrews, or drawn out by turning out the draw screws. If it is necessaryto tilt the stationary die the pivoting cylinders turn in the holder,preserving the alinement of the draw screws and insuring a full bearingfor the ends of the thrust screws. This eliminates any tendency for theends of the draw screws to become bent, and insures a strong, firmbacking for the holder, while providing for an easy and accurate adjustment.

The invention claimed is 1. The combination with the frame of a threadroller, of a die holder, thrust screws turning in the frame and adaptedto move the die holder in one direction, draw screws turning in theframe and adapted to move the die holder in the opposite direction, andmeans pivotally connecting the ends of the draw screws with the dieholder.

2. The combination with the frame of a thread roller, of a die holder,means for securing the die holder in position on the frame, thrustscrews turning in the frame and adapted to move the die holder in onedirection, draw screws turning in the frame and adapted to move the dieholder in the die holder.

opposite direction, and means pivotally connecting the ends of the drawscrews with the 3. The combination with the frame of a thread roller, ofa die holder, means for securing the die holder in position on theframe, die clamped to the die holder, thrust screws turning in the frameand adapted to move the die holder in one direction, draw screws turningin the frame and adapted to more the die holder in the oppositedirection, and meanspivotally connecting the ends of the draw screwswith the die holder.

4. The combination with the frame of a thread roller, of a die holder,cylinders loosely mounted in the die holder, thrust screws turning inthe frame and adapted to move the die holder in one direction, and

draw screws turning in the frame and threaded into said cylinders formoving the die holder in the opposite direction.

The combination with the frame of a thread roller, of a die holder,cylinders loosely mounted in the die holder, thrust screws turningin theframe and bearing against said cylinders, and draw screws turning in theframe and having their ends threaded into said cylinders.

6. The combination with the frame of a thread roller, of a die holder,cylinders car ried by the die holder, thrust screws turning in the frameand having their ends bearing against the cylinders, and draw screwsextending through the thrust screws and having their ends threaded intothe cylinders.

7. Means for adjusting the stationary die holder of a thread roller,consisting of cylinders adapted to be engaged with the die holder,tubular thrust screws adapted to bear against said cylinders, and drawscrews extending through the thrust screws and having their endsthreaded into the cylinders.

ALBERT H. GAESS.

WVitnesses:

IIOWARD U. Posr, Nari-IL. R. BRONSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

